persistence_emond_rules_file_creation.toml

[metadata]
creation_date = "2021/01/11"
integration = ["endpoint"]
maturity = "production"
min_stack_comments = "New fields added: required_fields, related_integrations, setup"
min_stack_version = "8.3.0"
updated_date = "2022/12/14"

[rule]
author = ["Elastic"]
description = """
Identifies the creation or modification of the Event Monitor Daemon (emond) rules. Adversaries may abuse this service by
writing a rule to execute commands when a defined event occurs, such as system start up or user authentication.
"""
from = "now-9m"
index = ["auditbeat-*", "logs-endpoint.events.*"]
language = "eql"
license = "Elastic License v2"
name = "Emond Rules Creation or Modification"
note = """## Setup

If enabling an EQL rule on a non-elastic-agent index (such as beats) for versions <8.2, events will not define `event.ingested` and default fallback for EQL rules was not added until 8.2, so you will need to add a custom pipeline to populate `event.ingested` to @timestamp for this rule to work.
"""
references = [
    "https://www.xorrior.com/emond-persistence/",
    "https://www.sentinelone.com/blog/how-malware-persists-on-macos/",
]
risk_score = 47
rule_id = "a6bf4dd4-743e-4da8-8c03-3ebd753a6c90"
severity = "medium"
tags = ["Elastic", "Host", "macOS", "Threat Detection", "Persistence"]
timestamp_override = "event.ingested"
type = "eql"

query = '''
file where event.type != "deletion" and
 file.path : ("/private/etc/emond.d/rules/*.plist", "/etc/emon.d/rules/*.plist", "/private/var/db/emondClients/*")
'''


[[rule.threat]]
framework = "MITRE ATT&CK"
[[rule.threat.technique]]
id = "T1546"
name = "Event Triggered Execution"
reference = "https://attack.mitre.org/techniques/T1546/"
[[rule.threat.technique.subtechnique]]
id = "T1546.014"
name = "Emond"
reference = "https://attack.mitre.org/techniques/T1546/014/"



[rule.threat.tactic]
id = "TA0003"
name = "Persistence"
reference = "https://attack.mitre.org/tactics/TA0003/"